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What is `int (dx)/(sqrt(4 + x^(2)))` equal to ?A. `l n |sqrt(4 + x^(2)) + x| + c`B. `l n |sqrt(4 + x^(2)) -x| + c`C. `sin^(-1) ((x)/(2)) + c`D. None of these

Answer» Correct Answer - A
`int (dx)/(sqrt(4 + x^(2))) = int (dx)/(sqrt(2^(2) + x^(2))) = ln |sqrt(4 + x^(2)) + x| + C`


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